Move MetricsStateManager into the Metrics component.

chrome/browser/metrics/metrics_services_manager.cc

Index: chrome/browser/metrics/metrics_services_manager.cc
diff --git a/chrome/browser/metrics/metrics_services_manager.cc b/chrome/browser/metrics/metrics_services_manager.cc
index c560dcd714083cad9de5efe149daba1f4b613fd7..09ba5d6557a1dd790800a94a09e295bb03b50339 100644
--- a/chrome/browser/metrics/metrics_services_manager.cc
+++ b/chrome/browser/metrics/metrics_services_manager.cc
@@ -9,10 +9,10 @@
 #include "chrome/browser/metrics/chrome_metrics_service_client.h"
 #include "chrome/browser/metrics/extensions_metrics_provider.h"
 #include "chrome/browser/metrics/metrics_service.h"
-#include "chrome/browser/metrics/metrics_state_manager.h"
 #include "chrome/browser/metrics/variations/variations_service.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
+#include "components/metrics/metrics_state_manager.h"
 #include "components/rappor/rappor_service.h"
 
 #if defined(OS_CHROMEOS)
@@ -84,7 +84,7 @@ bool MetricsServicesManager::IsMetricsReportingEnabled() const {
   chromeos::CrosSettings::Get()->GetBoolean(chromeos::kStatsReportingPref,
                                             &enabled);
 #else
-  enabled = local_state_->GetBoolean(prefs::kMetricsReportingEnabled);
+  enabled = local_state_->GetBoolean(metrics::prefs::kMetricsReportingEnabled);
 #endif  // #if defined(OS_CHROMEOS)
 #endif  // defined(GOOGLE_CHROME_BUILD)
   return enabled;